Interpretation:
The reason for the second phase in Al-4% Cu alloy to nucleate and grow when slowly cooled needs to be explained. Whether the process is desirable or not needs to be determined.
Concept Introduction:
The grain boundaries are generally the outcome of irregular development when the solid is crystallizing. The particles in the grain boundaries will not be in faultless crystalline planning. As the grain boundaries are termed as the flaws in the crystal assembly, they usually tend to reduce the electrical and thermal conductivity of the substance.
Nucleation is the primary stage in the development of either a new
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